小学英语基数词序数词【页】PPT课件

Can you write their ordinal numbers?
2
12
72
9
19
90
5
8
18
14
40
44
100
101
1000
Practice:
•December is the _____t_w__elmftohnth of the year. •Monday is the ______s_edcoayndof the week.
4
one billion
Can you read them ?
billion
million
thousand
100 2,000 30,000 400,000 5,000,000 60,000,000 700,000,000 8,000,000,000 90,000,000,000 100,000,000,000
数词
LOGO
什么是数词？
• 表示数目多少或顺序多少的词叫数词，数词分为基 数词和序数词。表示数目多少的数词叫基数词；表 示顺序的数词叫序数词。
基数词
one two
five
three
eight four
seven six
zero one nine eight
seven six
two three four
• 1-10 • one two three four five • six seven eight nine ten
11-19 eleven twelve thirteen forteen fifteen sixteen seventeen eighteen nineteen
Let’s review
What is the largest / smallest 4-digit number?
9831
1389
8 1 93
Let’s do a practice!
face to face number to number
序数词
•one ---first three---third
five---fifth seven---seventh
123 , 456 , 789 , 103
Step1:one hundred and twenty-three billion,
Step2:four hundred and fifty-six million, Step3:seven hundred and eighty-nine thousand,
eighth
second
ordinal numbers
seventh
third fourth fifth
sixth
ordinal numbers(序数词 )
一、二、三，特殊记， 加th从4起， 八少“t”，九去“e”， “ve”要用“f”替，(five, twelve) 见“y”变成“i”和“e”，词尾加上“th”， (twenty,thirty,---ninety) 若是遇到几十几，只变个位就可以。
thirty---thirtieth fifty---fiftieth seventy---seventieth ninety---ninetieth
first tenth ninth
eighth
second
third fourth
seventh
fifth sixth
first tenth ninth
ten sixty
fifty
thirty
forty
One hundred
ninety
twenty
seventy eighty
Dragon
•1-100
Look and Read
100
1
one hundred
1,000
2
one thousand
3
1,000,000
one million
源自文库
1,000,000,000
•English is spoken by most people as their _______
language in the USA, Great Britain, Australian,
nine---ninth
two---second four---fourth six---sixth eight---eighth •ten----tenth
twenty---twentieth forty---fortieth
sixty---sixtieth eighty---eightieth
hundred
看谁译得快：
一百 一千 一万 十万 一百万 一千 万 一亿 十亿 一百亿 一千亿 数十/百/千/百万
one hundred one thousand ten thousand one hundred thousand one million ten million one hundred million one billion ten billion one hundred billion tens/ hundreds/thousands/ millions of
Step4:one hundred and three
Look and Practice
625 six hundred and twenty-five
8,961 eight thousand, nine hundred
and sixty-one 95,680
ninety-five thousand, six hundred and eighty
Look and Practice 6,302,876 six million, three hundred and two thousand, eighty hundred and seventy-six
45,690,510,810 forty-five billion ,six hundred and ninety million, five hundred and ten thousand ,eight hundred and ten
five
zero one two
nine eight
numbers
three four
seven six
five
Numbers are widely used.
Hello ， 86861873 ---
Let’s sing a song ！
Title
Number song
Let’s count!